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Q108496: Running SCANDISK /ALL While a Virtual Drive Exists

Article: Q108496
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.2,6.21,6.22
Operating System(s): 
Keyword(s): 
Last Modified: 25-NOV-1999

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The information in this article applies to:

- Microsoft MS-DOS operating system versions 6.2, 6.21, 6.22 
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SYMPTOMS
========

Running SCANDISK /ALL incorrectly scans virtual drives created using the SUBST
command.

STATUS
======

Microsoft has confirmed this to be a problem in the ScanDisk program included
with MS-DOS versions 6.2, 6.21, and 6.22. We are researching this problem and
will post new information here in the Microsoft Knowledge Base as it becomes
available.

MORE INFORMATION
================

If you use drive A as a virtual drive (for example, by using the command SUBST
A: C:\DOS), running SCANDISK A: results in the following error message

  Drive A was created by using the SUBST or ASSIGN command and cannot be
  checked. To check drive A, run ScanDisk on drive C instead.

The error message recommends running ScanDisk on drive C because the physical
directory actually resides on C. This is normal.

If you run SCANDISK /ALL, ScanDisk actually diagnoses the virtual drive. While
this should not cause errors, Microsoft recommends that you not run SCANDISK
/ALL while a virtual drive exists.



Additional query words: 6.20 SCANDISK ALL SUBST

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620
Version           : MS-DOS:6.2,6.21,6.22

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